Dimensions: 12.75L x 5.75W x 1.75H in.. Constructed of durable plastic and metal. Features a green finish. Three adjustable straps provide a secure fit. Long spikes aerate the yard. Make easy work of aerating your yard with the Aleko Products Lawn and Garden Sharp Locking Aerating Spike Shoes. These durable shoes feature locking straps that stay secure on your feet.